Obtain a manual here: https://www.dynexproducts.com/pdp/DX-32L220A12/1854819
Resetting the tv will help sometimes. Turn it off with the power button on the set, not remote. Then unplug power cord for 3 minutes & plug back it and turn on with power switch. You'll have to re-setup the tv.
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
faults & possible causes to LCD screen are given with illustrations. You can get an idea about the fault to an extent.
SOURCE: Programming Scientific Atlantic remote to work with New Dynex TV
dynex is bestbuy's product try emerson, mine is working with emerson codes
SOURCE: User Manual for (Dynex) DX-LCDTV19
Go to the Dynex web site. Type your model number in the search box and follow the link to the user manual.
SOURCE: Dynex DX-LCD32-09. tv was working fine, then out
This type of failure could be in the LCD controller board or the power supply might not be providing enough voltage to the main board and LCD controller.
Let me know if you require further assistance locating the boards or part numbers.
SOURCE: TV worked fine one night, next day screen is white.
The LCD Panel failed. There is no easy fix but try to get the T-Con board to fix the issue. However, this part is usually only available with the whole LCD Panel. This is usually the most expensive part in the TV and the whole TV needs to be taken apart to replace the panel.
Might be economically viable if you can find a place that carrys the T-con but Dynex parts are usually hard to find. The LCD Panel part alone will exceed the cost of the TV.
SOURCE: 19'' Dynex TV does not come up as a Computer Monitor.
Follow these steps on the remote :
Press Input,
scroll down and select VGA.
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